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Finding the Fourth Proportional to 5,817.60, 8,728.64 and 2,699.20

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Solution

The fourth proportional to 5,817.60, 8,728.64 and 2,699.20 is: 4,049.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,817.60 : 8,728.64 = 2,699.20 : x
  2. Step 2: Convert to fraction form
    5,817.60/8,728.64 = 2,699.20/x
  3. Step 3: Cross multiply
    5,817.60x = 8,728.64 × 2,699.20
  4. Step 4: Simplify right side
    5,817.60x = 23,560,345.09
  5. Step 5: Solve for x
    x = 23,560,345.09/5,817.60
  6. Step 6: Final answer
    x = 4,049.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.